nice . i think if there was some other material i could use to replicate the actual h240x window and make screw holes in and then attach that probably would help.. what i meant with the bubbles though was that with bubbles in the res the pump seems to vibrate more.. causing the window to crack.. i have noticed that when you have it turned on out the case and try holding the whole unit a certain way the pump goes Silent unfortunatley i cant remember which way makes that happen.. lol to be honest its a real pain in the arse having to replace a res window every other few months even if there is a 3 year warranty with it its still ridiculous. I mean these units are supposed to be top of the class for aios. Be nice if there was some transparent thin rubber sheeting could use to place behind the window my res gets no algae due to hydrex in my distilled water

its definitley some kind of pressure causing it.. for example that last crack wasnt fully right through the window it was still like half a mil solid at the inside but soon as i touched one of the pipes it cracked right through

its definitley some kind of pressure causing it.. for example that last crack wasnt fully right through the window it was still like half a mil solid at the inside but soon as i touched one of the pipes it cracked right through

Might have tightened the screws too much. It really doesn't take a lot for the acrylic to crack under pressure. Make sure always to screw in a cross pattern. Also using a multi screw driver tool could help with preventing over tightening the screws, but not all tools have the functionality (so I can't really point to a specific one).